Pin-annealing machine.



W. K. JAMISON & J. CHRISTIAN.

PIN ANNEALINGIMACHINE. APPLICATION FILED DEC. 9, 1914 1,1%9,917, Patented Aug. 10,1915.

2 SHEETS-SHEET l.

f n 5 l W. K. JAMISON 8L1. CHRISTIAN.

PIN ANNEALING MACHINE. APPLICATION man DEC. 9, 1914.

1,149,917., Patented .10,1915.

2 SHE SHEET 2.

UNITED STATES PATENT OFFIOE.

WALTER K. IAMIsoN AND JOSEPH crmIsrI N, or INDIANAroLIs, INDIANA, ASSIGNORS T0 LINK-BELT coMrANY, or oI Ic Go, ILLINOIS, A CORPORATION or ILLINOIS.

PIN-ANNEALING MACHINE.

Specification of Letters Patent. Patented A g-. 10 1915.

Application filed December 9, 1914. Serial 110,876,257.

To all whom it may concern Be it known that we, WALTER K. JAMI- soN and Josnrn CHRISTIAN, citizens of the United States, and residents of Indianapolis, county of Marion, State of Indiana, have invented certain Improvements in Pin-Annealing Machines, of which the following is a specification.

One object of our invention is to provide a continuous machine for annealing pins, short shafts, and other sections, which are made in great numbers.

A further object of the invention is to design the machine so that both ends of a pin or shaft can be annealed simultaneously.

Our invention is particularly adapted for annealing pivot pins of chain linksin which the body portion must be comparatively hard and the ends must be annealed so that a head can be formed thereon by riveting in order to rigidly secure the links of a chain together.

In the accompanying drawings: Figure 1 is a perspective view, illustrating the front of our improved annealing machine; Fig. 2 is a perspective view, looking at one end of the machine; Fig. 3 is a perspective plan view; Fig. 4 is an enlarged view, illustrating one of the pins which may be annealed on this type of machine; Fig. 5 is a side view of the pin-carrying wheel detached; and Figs. 6 and 7 are detached perspective views of the burners.

Referring to the drawings, 1 is the base of the machine having an upright 2 to which is secured the bearings 3 .for the power driven shaft 1 on which is a grooved pulley 5. .On the shaft 4 is a worm 6 meshing with a Worm wheel 7 on a longitudinal shaft 8 mounted in bearings in the frame and carrying, at its opposite end, a pin-carrying wheel 9. This wheel 9 may be of any width desired, according to the length of the pins to be annealed, and has a series of notches 10, as illustrated in Fig. 5, for the reception of the several pins or other articles to be annealed. In the present instance, the pins to be annealed are, as hereinbefore stated, for use as pivot pins in drive chains. Each pin has a body portion at and reduced ends ac which, when the pins are assembled in the chain, are riveted so as to form heads to retain the several links in position.

11 is an inclined feeding table having an adjustable guide 12, the guide being held in the adjusted position by bolts 13 which extend through slots in the guide. This table is supported by a'post 14 which issecured to the base 1. Other means for supporting the table may be used without departing from the essential features of the invention. On one side of the pin-carrying wheel 9 1s a burner 15 and on the opposite side is a burner 16. Each of these burners has an elongated slot 17 and the upper end of each burner is curved as at 18, Figs. 2, 6, and 7, so that there will be an elongated flame a given distance from the pins as they are carried through the machine. The burner 15-has a right angled extension 19 slotted to receive the bolts 20, which adjustably secures it to a bloc]; 21 mounted on a screw 22 adapted to bearings in the frame of the machine. On this screw is a head 23 having a series of pro ecting pins by which the screw can be turned so as to adjust the burner 15 to and from the pin-carrying wheel. Secured to the base is a bearing 24: in which is mounted a hollow spindle 25 carrying, at its inner end, the burner 16. At the outer end of this spindle is an arm 26 having a screw-threaded opening therein and extending through the opening is an adjusting screw 27 mounted in a bearing 28 secured to the base of the machine. This screw has a head 29 provided with a series of projecting pins by which it is turned so as to move the burner 16 toward and from the pin wheel. By this construc- 'tion any width of pin may be annealed in this machine as the burners can be adjusted to allow the flame to play upon the particular portion of the pins to be annealed.

In order to hold the pins in position after they pass the vertical line, we provide a holder consisting, in the present instance, of a band 30 which extends from a pin 31 at the upper end to a pin 32 at the lower end. This pin 31 is mounted on an arm 33 secured to the upright 2, as shown in Fig. 1, and the lower pin is attached to an arm 34 secured to a bearing 28. The ribs between the notches of the wheel are preferably recessed at the center so as to clear the band 30 to allow it to bear directly upon the pins and hold them in position. Other means of holding these pins may be used without departing from the spirit of the invention.

In order to discharge the pins from the machine after they have passed the burners, we provide two plates 35 which are slotted,

, that the pins can be fed to the machine either from the inclined platform, as shown, a

.40 and we may locate a similar as at 36, and are mounted on studs 37 so that they can be adjusted to accommodate different widths of pin wheels. The upper end 38 of each plate is bent inward so as to extend into the path of the pins and, as the wheel travels continuously, the pins will be removed from the grooves 10 in the wheel and will be discharged at one side-of the machine.

In some instances, we may continue the guide 12in the form of a separate plate 39, which is adjustably secured to an upright guide on the opposite side of the pin wheel, if found desirable. j

By the above construction, it will be seen or from a hopperso as to "beassembled in the grooves of the pin wheel and as the pin wheel slowly revolves the ends of the ins to be annealed pass the flames issuing rom the burners located at each side of the wheel and are thus heated-to the proper degree. After the pins pass the burners they are automatically discharged from the machine.

In the drawings, we have illustrated a pin-carrying and to hold them in position in the notches of the wheel after they have passed the vertical line; and a burner at one side of the wheel.

2. The combination in a pin annealing I machine, of a vertically arranged notched wheel; a shaft on which the wheel is mounted; means for rotating the shaft; a burner at one side of the wheel; a feed table from which the pins are fed to the notches at the upper portion of the wheel; and means for discharging the pins from the lower portion of the wheel.

wheel with a burner on each side so as to anneal both ends of a pin simul- 3. The combination in a pin annealing" machine, of a vertically arranged wheel; notches in the periphery of the wheel a segmental burner at each side of the w eel; a band for holding the pins in the open notches of the wheel after they pass 'a vertical line; a feed table at one side of the wheel; and means for discharging the pins from the opposite side of the wheel.

4. The combination in a machine for annealin pins and like objects, of a shaft; a wheel aving notches in its periphery to receive' the pins to be annealed; an elongated burner atone side of the wheel and having a curved edge corresponding to the curve of the wheel so as to provide an-elongated flame at a given distance from the pins as they travel past the burner; a feed table; and means for discharging the pins from the wheel.

5. The combination of a shaft; a notched wheel mounted on the shaft;.means for rotating the shaft; two burners, one mounted on one side of the wheel and the other mounted on the opposite side thereof, each burner havinga curved end, the curve being on the same are as the curve of the wheel and each burnerhaving an elongated slot;

. and means for adjusting the burners to and from the wheel.

V 6. The combination of a shaft; a wheel mounted on the shaft and having notches in its periphery to receive the pins to be annealed; means for driving the shaft; an inclined table on which the pins to be annealed are placed so that they can be fed to the.

wheel; means for retaining the pins in the notches of the wheel during a portion of the time they are carried by the wheel; and two adjustable deflecting plates having extensions projecting into the path of the pins so as to discharge the pins from the wheel after they pass the burners.

In testimony whereof, we have signed our names to this specification, in the presence of two subscribing witnesses.

WALTER K. JAWSON. JOSEPH CHRISTIAN. Witnesses:

N. B. CALVELAGE L. B. CALVELAGE. 

